summaryrefslogtreecommitdiff
path: root/src/newgrf_industrytiles.cpp
blob: 36ab7bc2df972ab361b456416daf314ceb31dec5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
/* $Id$ */

/** @file newgrf_industrytiles.cpp */

#include "stdafx.h"
#include "openttd.h"
#include "functions.h"
#include "variables.h"
#include "debug.h"
#include "viewport.h"
#include "landscape.h"
#include "newgrf.h"
#include "industry.h"
#include "newgrf_commons.h"
#include "newgrf_spritegroup.h"
#include "newgrf_callbacks.h"
#include "newgrf_industries.h"
#include "newgrf_industrytiles.h"
#include "newgrf_text.h"
#include "industry_map.h"
#include "clear_map.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "sprite.h"
#include "transparency.h"

/**
 * Based on newhouses equivalent, but adapted for newindustries
 * @param parameter from callback.  It's in fact a pair of coordinates
 * @param tile TileIndex from which the callback was initiated
 * @param index of the industry been queried for
 * @return a construction of bits obeying the newgrf format
 */
uint32 GetNearbyIndustryTileInformation(byte parameter, TileIndex tile, IndustryID index)
{
	byte tile_type;
	bool is_same_industry;

	if (parameter != 0) tile = GetNearbyTile(parameter, tile); // only perform if it is required
	is_same_industry = (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == index);
	tile_type = GetTerrainType(tile) << 2 | (IsTileType(tile, MP_WATER) ? 1 : 0) << 1 | (is_same_industry ? 1 : 0);

	uint z;
	Slope tileh = GetTileSlope(tile, &z);
	return GetTileType(tile) << 24 | z << 16 | tile_type << 8 | tileh;
}

/** This is the position of the tile relative to the northernmost tile of the industry.
 * Format: 00yxYYXX
 * Variable  Content
 * x         the x offset from the northernmost tile
 * XX        same, but stored in a byte instead of a nibble
 * y         the y offset from the northernmost tile
 * YY        same, but stored in a byte instead of a nibble
 * @param tile TileIndex of the tile to evaluate
 * @param ind_tile northernmost tile of the industry
 */
static uint32 GetRelativePosition(TileIndex tile, TileIndex ind_tile)
{
	byte x = TileX(tile) - TileX(ind_tile);
	byte y = TileY(tile) - TileY(ind_tile);

	return ((y & 0xF) << 20) | ((x & 0xF) << 16) | (y << 8) | x;
}

static uint32 IndustryTileGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
{
	const Industry *inds = object->u.industry.ind;
	TileIndex tile       = object->u.industry.tile;

	if (object->scope == VSG_SCOPE_PARENT) {
		return IndustryGetVariable(object, variable, parameter, available);
	}

	switch (variable) {
		 /* Construction state of the tile: a value between 0 and 3 */
		case 0x40 : return (IsTileType(tile, MP_INDUSTRY)) ? GetIndustryConstructionStage(tile) : 0;

		case 0x41 : return GetTerrainType(tile);

		/* Current town zone of the tile in the nearest town */
		case 0x42 : return GetTownRadiusGroup(ClosestTownFromTile(tile, (uint)-1), tile);

		/* Relative position */
		case 0x43 : return GetRelativePosition(tile, inds->xy);

		/* Animation frame. Like house variable 46 but can contain anything 0..FF. */
		case 0x44 : return (IsTileType(tile, MP_INDUSTRY)) ? GetIndustryAnimationState(tile) : 0;

		/* Land info of nearby tiles */
		case 0x60 : return GetNearbyIndustryTileInformation(parameter, tile, inds == NULL ? (IndustryID)INVALID_INDUSTRY : inds->index);

		/* Animation stage of nearby tiles */
		case 0x61 : {
			tile = GetNearbyTile(parameter, tile);
			if (IsTileType(tile, MP_INDUSTRY) && GetIndustryByTile(tile) == inds) {
				return GetIndustryAnimationState(tile);
			}
			return 0xFFFFFFFF;
		}

		/* Get industry tile ID at offset */
		case 0x62 : return GetIndustryIDAtOffset(GetNearbyTile(parameter, tile), inds);
	}

	DEBUG(grf, 1, "Unhandled industry tile property 0x%X", variable);

	*available = false;
	return (uint32)-1;
}

static const SpriteGroup *IndustryTileResolveReal(const ResolverObject *object, const SpriteGroup *group)
{
	/* IndustryTile do not have 'real' groups.  Or do they?? */
	return NULL;
}

static uint32 IndustryTileGetRandomBits(const ResolverObject *object)
{
	const TileIndex tile = object->u.industry.tile;
	if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return 0;
	return (object->scope == VSG_SCOPE_SELF) ? GetIndustryRandomBits(tile) : GetIndustryByTile(tile)->random;
}

static uint32 IndustryTileGetTriggers(const ResolverObject *object)
{
	const TileIndex tile = object->u.industry.tile;
	if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return 0;
	return (object->scope == VSG_SCOPE_SELF) ? GetIndustryTriggers(tile) : GetIndustryByTile(tile)->random_triggers;
}

static void IndustryTileSetTriggers(const ResolverObject *object, int triggers)
{
	const TileIndex tile = object->u.industry.tile;
	if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return;

	if (object->scope == VSG_SCOPE_SELF) {
		SetIndustryTriggers(tile, triggers);
	} else {
		GetIndustryByTile(tile)->random_triggers = triggers;
	}
}

static void NewIndustryTileResolver(ResolverObject *res, IndustryGfx gfx, TileIndex tile, Industry *indus)
{
	res->GetRandomBits = IndustryTileGetRandomBits;
	res->GetTriggers   = IndustryTileGetTriggers;
	res->SetTriggers   = IndustryTileSetTriggers;
	res->GetVariable   = IndustryTileGetVariable;
	res->ResolveReal   = IndustryTileResolveReal;

	res->psa             = &indus->psa;
	res->u.industry.tile = tile;
	res->u.industry.ind  = indus;
	res->u.industry.gfx  = gfx;

	res->callback        = CBID_NO_CALLBACK;
	res->callback_param1 = 0;
	res->callback_param2 = 0;
	res->last_value      = 0;
	res->trigger         = 0;
	res->reseed          = 0;
}

void IndustryDrawTileLayout(const TileInfo *ti, const SpriteGroup *group, byte rnd_color, byte stage, IndustryGfx gfx)
{
	const DrawTileSprites *dts = group->g.layout.dts;
	const DrawTileSeqStruct *dtss;

	SpriteID image = dts->ground_sprite;
	SpriteID pal   = dts->ground_pal;

	if (IS_CUSTOM_SPRITE(image)) image += stage;

	if (GB(image, 0, SPRITE_WIDTH) != 0) DrawGroundSprite(image, pal);

	foreach_draw_tile_seq(dtss, dts->seq) {
		if (GB(dtss->image, 0, SPRITE_WIDTH) == 0) continue;

		image = dtss->image;
		pal   = dtss->pal;

		if (IS_CUSTOM_SPRITE(image)) image += stage;

		if (HasBit(image, PALETTE_MODIFIER_COLOR)) {
			if (pal == 0) {
				pal = GENERAL_SPRITE_COLOR(rnd_color);
			}
		} else {
			pal = PAL_NONE;
		}

		if ((byte)dtss->delta_z != 0x80) {
			AddSortableSpriteToDraw(
				image, pal,
				ti->x + dtss->delta_x, ti->y + dtss->delta_y,
				dtss->size_x, dtss->size_y,
				dtss->size_z, ti->z + dtss->delta_z,
				!HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(TO_INDUSTRIES)
			);
		} else {
			AddChildSpriteScreen(image, pal, (byte)dtss->delta_x, (byte)dtss->delta_y, IsTransparencySet(TO_INDUSTRIES));
		}
	}
}

uint16 GetIndustryTileCallback(CallbackID callback, uint32 param1, uint32 param2, IndustryGfx gfx_id, Industry *industry, TileIndex tile)
{
	ResolverObject object;
	const SpriteGroup *group;

	NewIndustryTileResolver(&object, gfx_id, tile, industry);
	object.callback = callback;
	object.callback_param1 = param1;
	object.callback_param2 = param2;

	group = Resolve(GetIndustryTileSpec(gfx_id)->grf_prop.spritegroup, &object);
	if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;

	return group->g.callback.result;
}

bool DrawNewIndustryTile(TileInfo *ti, Industry *i, IndustryGfx gfx, const IndustryTileSpec *inds)
{
	const SpriteGroup *group;
	ResolverObject object;

	if (ti->tileh != SLOPE_FLAT) {
		bool draw_old_one = true;
		if (HasBit(inds->callback_flags, CBM_INDT_DRAW_FOUNDATIONS)) {
			/* Called to determine the type (if any) of foundation to draw for industry tile */
			uint32 callback_res = GetIndustryTileCallback(CBID_INDUSTRY_DRAW_FOUNDATIONS, 0, 0, gfx, i, ti->tile);
			draw_old_one = callback_res != 0;
		}

		if (draw_old_one) DrawFoundation(ti, FOUNDATION_LEVELED);
	}

	NewIndustryTileResolver(&object, gfx, ti->tile, i);

	group = Resolve(inds->grf_prop.spritegroup, &object);
	if (group == NULL || group->type != SGT_TILELAYOUT) {
		return false;
	} else {
		/* Limit the building stage to the number of stages supplied. */
		byte stage = GetIndustryConstructionStage(ti->tile);
		stage = Clamp(stage - 4 + group->g.layout.num_sprites, 0, group->g.layout.num_sprites - 1);
		IndustryDrawTileLayout(ti, group, i->random_color, stage, gfx);
		return true;
	}
}

extern bool IsSlopeRefused(Slope current, Slope refused);

bool PerformIndustryTileSlopeCheck(TileIndex ind_base_tile, TileIndex ind_tile, const IndustryTileSpec *its, IndustryType type, IndustryGfx gfx, uint itspec_index)
{
	Industry ind;
	ind.index = INVALID_INDUSTRY;
	ind.xy = ind_base_tile;
	ind.width = 0;
	ind.type = type;

	uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_SHAPE_CHECK, 0, itspec_index, gfx, &ind, ind_tile);
	if (callback_res == CALLBACK_FAILED) {
		return !IsSlopeRefused(GetTileSlope(ind_tile, NULL), its->slopes_refused);
	}
	if (its->grf_prop.grffile->grf_version < 7) {
		return callback_res != 0;
	}

	/* Copy some parameters from the registers to the error message text ref. stack */
	SwitchToErrorRefStack();
	PrepareTextRefStackUsage(4);
	SwitchToNormalRefStack();

	switch (callback_res) {
		case 0x400: return true;
		case 0x401: _error_message = STR_0239_SITE_UNSUITABLE;                 return false;
		case 0x402: _error_message = STR_0317_CAN_ONLY_BE_BUILT_IN_RAINFOREST; return false;
		case 0x403: _error_message = STR_0318_CAN_ONLY_BE_BUILT_IN_DESERT;     return false;
		default: _error_message = GetGRFStringID(its->grf_prop.grffile->grfid, 0xD000 + callback_res); return false;
	}
}

void AnimateNewIndustryTile(TileIndex tile)
{
	Industry *ind = GetIndustryByTile(tile);
	IndustryGfx gfx = GetIndustryGfx(tile);
	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
	byte animation_speed = itspec->animation_speed;

	if (HasBit(itspec->callback_flags, CBM_INDT_ANIM_SPEED)) {
		uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIMATION_SPEED, 0, 0, gfx, ind, tile);
		if (callback_res != CALLBACK_FAILED) animation_speed = Clamp(callback_res & 0xFF, 0, 16);
	}

	/* An animation speed of 2 means the animation frame changes 4 ticks, and
	 * increasing this value by one doubles the wait. 0 is the minimum value
	 * allowed for animation_speed, which corresponds to 30ms, and 16 is the
	 * maximum, corresponding to around 33 minutes. */
	if ((_tick_counter % (1 << animation_speed)) != 0) return;

	bool frame_set_by_callback = false;
	byte frame = GetIndustryAnimationState(tile);
	uint16 num_frames = GB(itspec->animation_info, 0, 8);

	if (HasBit(itspec->callback_flags, CBM_INDT_ANIM_NEXT_FRAME)) {
		uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_NEXT_FRAME, HasBit(itspec->animation_special_flags, 0) ? Random() : 0, 0, gfx, ind, tile);

		if (callback_res != CALLBACK_FAILED) {
			frame_set_by_callback = true;

			switch (callback_res & 0xFF) {
				case 0xFF:
					DeleteAnimatedTile(tile);
					break;
				case 0xFE:
					/* Carry on as normal. */
					frame_set_by_callback = false;
					break;
				default:
					frame = callback_res & 0xFF;
					break;
			}
		}
	}

	if (!frame_set_by_callback) {
		if (frame < num_frames) {
			frame++;
		} else if (frame == num_frames && GB(itspec->animation_info, 8, 8) == 1) {
			/* This animation loops, so start again from the beginning */
			frame = 0;
		} else {
			/* This animation doesn't loop, so stay here */
			DeleteAnimatedTile(tile);
		}
	}

	SetIndustryAnimationState(tile, frame);
	MarkTileDirtyByTile(tile);
}

static void ChangeIndustryTileAnimationFrame(TileIndex tile, IndustryAnimationTrigger iat, uint32 random_bits, IndustryGfx gfx, Industry *ind)
{
	uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_START_STOP, random_bits, iat, gfx, ind, tile);
	if (callback_res == CALLBACK_FAILED) return;

	switch (callback_res & 0xFF) {
		case 0xFD: /* Do nothing. */         break;
		case 0xFE: AddAnimatedTile(tile);    break;
		case 0xFF: DeleteAnimatedTile(tile); break;
		default:
			SetIndustryAnimationState(tile, callback_res & 0xFF);
			AddAnimatedTile(tile);
			break;
	}
}

bool StartStopIndustryTileAnimation(TileIndex tile, IndustryAnimationTrigger iat, uint32 random)
{
	IndustryGfx gfx = GetIndustryGfx(tile);
	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);

	if (!HasBit(itspec->animation_triggers, iat)) return false;

	Industry *ind = GetIndustryByTile(tile);
	ChangeIndustryTileAnimationFrame(tile, iat, random, gfx, ind);
	return true;
}

bool StartStopIndustryTileAnimation(const Industry *ind, IndustryAnimationTrigger iat)
{
	bool ret = true;
	uint32 random = Random();
	BEGIN_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
		if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == ind->index) {
			if (StartStopIndustryTileAnimation(tile, iat, random)) {
				SB(random, 0, 16, Random());
			} else {
				ret = false;
			}
		}
	END_TILE_LOOP(tile, ind->width, ind->height, ind->xy)

	return ret;
}

static void DoTriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger, Industry *ind)
{
	ResolverObject object;

	IndustryGfx gfx = GetIndustryGfx(tile);
	const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);

	NewIndustryTileResolver(&object, gfx, tile, ind);

	object.callback = CBID_RANDOM_TRIGGER;
	object.trigger = trigger;

	const SpriteGroup *group = Resolve(itspec->grf_prop.spritegroup, &object);
	if (group == NULL) return;

	byte new_random_bits = Random();
	byte random_bits = GetIndustryRandomBits(tile);
	random_bits &= ~object.reseed;
	random_bits |= new_random_bits & object.reseed;
	SetIndustryRandomBits(tile, random_bits);
}

void TriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger)
{
	DoTriggerIndustryTile(tile, trigger, GetIndustryByTile(tile));
}

extern void DoTriggerIndustry(Industry *ind, IndustryTileTrigger trigger);

void TriggerIndustry(Industry *ind, IndustryTileTrigger trigger)
{
	BEGIN_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
		if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == ind->index) {
			DoTriggerIndustryTile(tile, trigger, ind);
		}
	END_TILE_LOOP(tile, ind->width, ind->height, ind->xy)

	DoTriggerIndustry(ind, trigger);
}